Programmer Think

background We have a regular task in a single project, which will query and calculate the scores and rankings of different users from each business table every other hour. It is realized by Quartz; This encountered a problem in the later horizontal expansion to multi instance cluster deployment: the scheduled task is repeatedly executed in mul ...

The default logging framework used by SpringBoot is logback. Spring boot starter contains the spring boot starter logging module. The log framework is logback. Therefore, we do not need to introduce the spring boot starter logging module separately.<dependency> <groupId>org.springframework.boot</groupId> <artifactId ...

Catalogue 1, Foreword 2, About SimHash Supplementary knowledge 1) What is Hamming distance 2) Application of Hamming distance 3) What is edit distance 3, Geometric significance and principle of SimHash algorithm 1) Geometric significance of SimHash algorithm 2) Calculation principle of SimHash III) text similarity calculation 4, Java ...

Click on "end of life", pay attention to the official account. Daily delivery, dry time! 1. Background Use the flowable UI that comes with flowable to make the flow chart Use the interface used by the springboot development process to complete the business functions of the process 2. Deployment and operation of flowabl ...

1, Project module introduction and database design 1. Engineering structure 2. Module introduction Guli parent: online teaching root directory (parent project), managing four sub modules Canal client: canal database table synchronization module (statistical synchronization data)Common: parent node of common module Common util: ...

SpringBoot2 1. Introduction to springboot Spring Boot is a new framework provided by pivot team. It is designed to simplify the initial construction and development process of new spring applications. The framework uses a specific way to configure, so that developers no longer need to define a templated configuration. In this way, Spri ...

Getting started SpringBoot SpringBoot is a new framework provided by pivot team. It is designed to simplify the initial construction and development process of Spring applications quick get start 1. Create a new module interface 2. Check SpringWeb under Web. For spring MVC dependency, click Finish 3. Write a simple business layer code ...

​SpringBoot3.0 is coming out. It is said that the minimum requirement of JDK is 17??? My darling, JDK8 hasn't fully understood. First learn about springboot. 1, What is SpringBoot Official description: Translation: Through Spring Boot, you can easily create independent, production level Spring based applications and "run" them. ...

preface After consulting the official documents of mybatis plus, I found that there were only a few words and no examples for multi table joint query. I had to figure out how to use mybatis plus for multi table joint query. The way of using xml is too redundant, so after checking the use of annotations, we decisively choose to use annotations. ...

Mybatis Plus quick get start maven configuration <?xml version="1.0" encoding="UTF-8"?> <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd"> <modelVersion>4.0. ...